Here is a collection of verses in the Bible that describes the Earth as flat.
I could EASILY go on a tirade into discussion and analysis with this topic and other aspects of astronomy, meteorology, mathematics, etc of the Bible, but I will simply post the main verses that talk about a flat earth there.
There are others, but most of them are repetitive in nature to these.
And he shall set up an ensign for the nations, and shall assemble the outcasts of Israel, and gather together the dispersed of Judah from the four corners of the earth.
And after these things I saw four angels standing on the four corners of the earth, holding the four winds of the earth, that the wind should not blow on the earth, nor on the sea, nor on any tree.
The measure thereof is longer than the earth, and broader than the sea.
For he looketh to the ends of the earth, and seeth under the whole heaven;
He directeth it under the whole heaven, and his lightning unto the ends of the earth.
Where wast thou when I laid the foundations of the earth? declare, if thou hast understanding.
Who hath laid the measures thereof, if thou knowest? or who hath stretched the line upon it?
Whereupon are the foundations thereof fastened? or who laid the corner stone thereof;
That it might take hold of the ends of the earth, that the wicked might be shaken out of it?
O LORD, my strength, and my fortress, and my refuge in the day of affliction, the Gentiles shall come unto thee from the ends of the earth, and shall say, Surely our fathers have inherited lies, vanity, and things wherein there is no profit.
The tree grew, and was strong, and the height thereof reached unto heaven, and the sight thereof to the end of all the earth:
Again, the devil taketh him up into an exceeding high mountain, and sheweth him all the kingdoms of the world, and the glory of them;